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Local Guidelines for Implementing the <br />California Environmental Quality Act (2023) TYPES OF EIRS <br /> <br /> <br />2023 City of Santa Ana Local Guidelines 8-3 ©Best Best & Krieger LLP <br />8.04 SUBSEQUENT EIR. <br />A Subsequent EIR is required when a previous EIR has been prepared and certified, or a <br />Negative Declaration or Mitigated Negative Declaration has been adopted, for a project and at <br />least one of the three following situations occur: <br />(a) Substantial changes are proposed in the project which will require major revisions of a <br />previous EIR due to the identification of new significant environmental effects or a <br />substantial increase in the severity of previously identified significant effects; <br />(b) Substantial changes occur with respect to the circumstances under which the project is to <br />be undertaken which will require major revisions of a previous EIR due to the identification <br />of new significant environmental effects or a substantial increase in the severity of <br />previously identified significant effects; or <br />(c) New information, which was not known and could not have been known with the exercise <br />of reasonable diligence at the time the previous EIR was certified as complete or the <br />Negative Declaration/Mitigated Negative Declaration was adopted, becomes available and <br />shows any of the following: <br />(1) the project will have one or more significant effects not discussed in a previous <br />EIR, Negative Declaration, or Mitigated Negative Declaration; <br />(2) significant effects previously examined will be substantially more severe than <br />shown in a previous EIR; <br />(3) mitigation measures or alternatives previously found not to be feasible are in fact <br />feasible and would substantially reduce one or more significant effects, but the <br />project proponent declines to adopt the mitigation measures or alternatives; or <br />(4) mitigation measures or alternatives which were not considered in a previous EIR <br />would substantially lessen one or more significant effects on the environment, but <br />the project proponent declines to adopt the mitigation measures or alternatives. <br />A Subsequent EIR must receive the same circulation and review as the previous EIR <br />received. As a potential tool to determine whether a Subsequent EIR is required, see Form J-1 of <br />these Local Guidelines. <br />In instances where the City is evaluating a modification or revision to an existing use <br />permit, the City may consider only those environmental impacts related to the changes between <br />what was allowed under the old permit and what is requested under the new permit. Only if these <br />differential impacts fall within the categories described above may the City require additional <br />environmental review. <br />When the City is considering approval of a development project that is consistent with a <br />general plan for which an EIR was completed, another EIR is required only if the project causes <br />environmental effects peculiar to the parcel which were not addressed in the prior EIR or <br />substantial new information shows the effects peculiar to the parcel will be more significant than <br />described in the prior EIR. (Reference: State CEQA Guidelines, § 15162.)